Give Satisfaction

I've been familiar with these stories/this world for fifteen years but it still hits me now and then how crazy it is that some rich people had personal servants to do all these little things for them.

Anyway, what I'm gathering from all this is that around £100 - £120 is about the ceiling for a valet at a country estate in the 1910s. And I'm planning to write them, of course, in an urban bachelor household in the 1920s. Plus I want to emphasize how generous Bertie is and how superlative a valet Jeeves is. I'm thinking £200 as a reasonable yearly wage to convey that? Plus in canon it seems like there's also a ton in tips for a job exceptionally well done?